| (19) |
 |
|
(11) |
EP 2 835 348 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
03.06.2015 Bulletin 2015/23 |
| (43) |
Date of publication A2: |
|
11.02.2015 Bulletin 2015/07 |
| (22) |
Date of filing: 30.03.2010 |
|
| (51) |
International Patent Classification (IPC):
|
|
| (84) |
Designated Contracting States: |
|
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO
PL PT RO SE SI SK SM TR |
| (30) |
Priority: |
31.03.2009 JP 2009084160
15.10.2009 JP 2009238344
|
| (62) |
Application number of the earlier application in accordance with Art. 76 EPC: |
|
10758263.7 / 2415709 |
| (71) |
Applicants: |
|
- Mitsubishi Materials Corporation
Chiyoda-ku
Tokyo 100-8117 (JP)
- Mitsubishi Materials Electronic Chemicals Co.,
Ltd.
Akita-shi
Akita 010-8585 (JP)
|
|
| (72) |
Inventors: |
|
- Honda, Tsunetoshi
Akita-shi, Akita 010-8585 (JP)
- Kamiya, Takeshi
Akita-shi, Akita 010-8585 (JP)
|
| (74) |
Representative: Gille Hrabal |
|
Brucknerstrasse 20
40593 Düsseldorf
40593 Düsseldorf (DE) |
|
| |
|
| (54) |
Method for producing fluorosulfate and method for producing bis(fluorosulfonyl)imide
onium salt |
(57) According to the method for fluorosulfate and the method for producing bis(fluorosulfonyl)imide
onium salt, first, an aqueous solution is prepared by dissolving a mixed liquid containing
bis(fluorosulfonyl)imide and fluorosulfonic acid in water. Then, the aqueous solution
is neutralized with an alkaline compound, producing bis(fluorosulfonyl)imide salt
and fluorosulfate. In the methods, fluorosulfate, and bis(fluorosulfonyl)imide onium
salt can be obtained safely and easily.